Dental plate.



No. 781,589. PATENTBD JAN. 31, 1905.

G. L. BUCKWALTBR & W. G. WIRT.

DENTAL PLATE.

APPLICATION FILED MAY 11, 1904.

WITNESSES INVENTOR 5 Q'yrus L.Buc/E wa ZTer B) I TTORNEYS UNITED STATES Patented January 31, 1905.

PATENT OEEIcE.

CYRUS LEVI BUCKIVALTER AND \VILLIABI GUNN \YIRT, OF LOUDONVILLE, OHIO.

DENTAL PLATE.

SPECIFICATION forming part of Letters Patent No. 781,589, dated January 31, 1905.

Application filed May 1'7,

To ((1/7 1071//21 f1 may comw'n:

Be it known that we, CYnUs LnvI BUCKWAL- rm: and WILLIAM (,IrUNN \VIn'r, citizens of the United States. residing at Loudonville, in the 5 county of Ashland and State of Ohio, have invented certain new and useful Improvements in Dental Plates, of which the following is a specification, such as will enable those skilled i in the art to which it appertains to make and use the same.

This invention relates to dental plates used in the manufacture of artificial teeth and to which the upper teeth are secured; and the object of the invention is to provide improved I5 means for holdingsuch plates in position withi in the mouth.

The invention is fully disclosed in the following specil'i -ation, of which the accompanying drawings form a part, in which the separate parts of our improvement are designated by suitable reference characters in each of the views, and in which Figure 1 is a perspective view of our improved dental plate; Fig. 2, a longitudinal section thereof on the line 22, and Fig. 3 a transverse section thereof on the line 3 3.

In the practice of our invention we provide a dental plate 11. composed of rubber or other suitable material in the usual manner and with 0 which in practice the teeth are connected. The body portion a of the plate a is convex in cross and longitudinal section, as clearly shown in the drawings, so as to enable the said body portion to conform to the roof or palatine portion of the month, and said plate is also provided with the usual flange or rim 11, forming a groove or space a", in which the gums of the upper jaw tit.

In the practice of our invention and in or- 4 der to provide means to securely hold the plate 1/ in the mouth we form in the upper surface of the central or body portion thereof a recess Z, which is substantially of the same form as said plate, and in the central portion of this recess we secure a suction device (1,

which is cup-shaped in cross-section and the I general form of which is that of the recess 1) and the body portion of the plate. The suction device 1; is composed of pure soft rubber and may be expanded and depressed by pressure applied to the perimeter thereof, so as to rest in or lie in the recess and substantially fill the same.

In the form of construction shown a metal plate (I secured in the central part of the body portion u" of the plate 1/, and a small disk or button a is secured centrally in the bottom of the suction device 0, and the plate and disk or button (18.16 connected by a pin or rivetf. In this way the suction device 0 is securely held in its proper position, and no part of the pin or rivetfcan come in contact I with the palatinc surface of the mouth or with the tongue.

In practice the plate is inserted into the mouth in the usual manner and pressed upwardly, so that the cupshaped suction device comes in contact with the roof or palatine surface of the mouth, and pressure is applied to the plate until it is firmly seated. In this operation the cup-shaped suction device is expanded, and all air is forced from between the same and the roof of the mouthf It will be understood that the perimeter of the suction device comes in contact with the roof of the month before the other portions of the plate, and by applying pressure to the plate and forcing it upwardly the cup-shaped suction device is expanded, as hereinbefore described, until it fills the chamber or recess 6. In this position of the parts the cup-shaped device 0 forms or prtaluces a suction which securely holds the plate in position, and said plate will not accidentally drop out and is held against any lateral or other movement.

Our improved suction device or attachment also prevents all soreness in the roof of the mouth, and coughing, laughing, or speaking will not loosen or detach the plate, and this gives great confidence to the user thereof and also prevents to an extent the breaking of the plate from any cause.

Having fully described our invention, what we claim as new, and desire to secure by Letters Patent, is

A dental plate of the usual form, the body portion of which is provided in the top thereof with a recess, and a flexible and elastic cupshaped suction device secured centrally in said recess and the edges of which are directed up- Wardly, the connection of the suction device With the plate being made by means of a pin or rivet having end pieces, one of which is countersunk in the central top portion of the top plate and the other in the central bottom portion of the suction device, substantially as shown and described.

In testimony that We claim the'foregoing as I our invention We have signed our names, in presence of the subscribing Witnesses, this 14th day of May, 1904.

CYRUS LEVI BUOKWALTER. WVILLIAM GUNN WVIRT. WVitnesses:

F. R. BALDNER, C. A. AMHoLT. 

